Your tube preamp and ss amp thread

Vintage gear:  Audio Research LS2B MKII into a pair of Sumo Andromeda IIa MOSFET power amps into Acoustat electrostatic hybrids.  30 years of surviving shoot outs.  Maybe they go in the coffin with me..  

Over the past year, been using a Audible Illusions L3A with a combination of SS amps in this order. 
McIntosh MC152
Rowland Model 12
Pass XA 30.5
and now a Levinson 532H

All combinations sounded good to my ears. I’m interested in going for an even blacker background which I think there could be limits with a tube preamp. Kind of a trade off between detail with a SS preamp or a musical tube preamp presentation. I’ve read reviews that the AI L3B provides that blacker background but that’s going to cost me another $3k, so I might change out tubes on the L3A for now to hear what happens. 

I run Meixing Ming da MD90's monoblocks with four KT90's a side, using a Yamaha as1100 as a pre amp, which also doubles as an integrated amp. This is essential to troubleshoot the system and tubes when needed. Thankfully my system has been stable for a couple of years now.

Ayon S-10 Mk 2 Signature
Karan KAS 270

Rouge 99 Magnum
Mark Levinson No. 436 monoblocks